JP2000270500A - Insulation monitor system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly confirm initial failure by transmitting an alarm and insulation level data stored into a memory from a transceiver to the terminal device of an insulation monitoring control department via PHS network to the insulation monitor device. SOLUTION: When a leak current level detected by a detection part 11 exceeds a specified value, the detector 11 outputs an alarm signal to reporting equipment 2, operates a memory 13 for storing leak current detection data, and at the same time allows a transmission/reception part 13 to automatically start a call operation to a PHS terminal 4 of a monitor center. When a transmission/reception part 12 and the PHS terminal 4 are set to a communication state via PHS network 3, the identification number of an insulation detector 1 is transmitted from the transmission/reception part 12, and a data transmission request signal is sent to the transmission/reception part 12 from the terminal 4 where the transmission of the identification number has been confirmed. According to the request signal, the transmission/reception part 12 reads detection data being stored in the memory 13 and transmits the data to the PHS terminal 4 processing by an information-processing terminal 5, and a person in charge confirms the leak current detection data after an alert has been issued.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulation monitoring system for monitoring the insulation status of power equipment of a power consumer.
The present invention relates to an insulation monitoring system capable of promptly taking a corrective action when an alarm is issued.

[0002]

2. Description of the Related Art In recent years, with the development of the information society, the impact on the general society when a power failure has occurred has become extremely large. Therefore, in order to prevent a power outage accident caused by insulation deterioration of power equipment, etc., an insulation monitoring system that constantly monitors the insulation status of the electric circuit of the power equipment has been put into practical use.
Widely used. As a method of monitoring the insulation state of a circuit, a method of detecting a level of a circuit leakage current or an insulation resistance component current or the like (hereinafter, collectively referred to as a leakage current) and monitoring the level is generally used. FIG.
FIG. 2A is a configuration diagram illustrating an example of a conventional insulation monitoring system, and FIG.
Indicates a telephone communication system, and (b) indicates an automatic notification system. In the telephone communication system shown in FIG. 1A, the insulation detector 21 installed in the power receiving room 30 of the power consumer always
The leakage current of the electric circuit to which the power equipment is connected is detected and monitored, and when a leakage current of a predetermined level or more is detected, a warning signal is output from the insulation detector 21 to a notification device 22 installed in an office 31 or the like. Sent to Then, when the alarm signal turns on the lamp of the notifying device 22 and emits an alarm sound, the consumer who recognizes the alarm contacts the monitoring center 32 or the like of the insulation monitoring system by telephone 23. . In the automatic notification system shown in FIG.
A transmitter 25 is installed in place of the notifier 22, and when the level of the leakage current detected by the insulation detector 21 exceeds a predetermined level, an alarm signal is issued to turn on the lamp of the transmitter 25, The alarm signal is automatically transmitted from the telephone set 23 to the reception processing device 26 of the monitoring center 32 using the subscribed telephone line.

[0003] The monitoring center 32 receives the notification, calls the office of the monitoring department in charge of the district where the customer power receiving room 30 is located (hereinafter referred to as the responsible office) by telephone, or performs a receiving process. The contents received by the device 26 are transferred to the simple receiver installed in the office in charge. The office in charge of the call will contact the customer by telephone to confirm that there is no problem with the insulation deterioration, such as the occurrence of abnormalities in the power equipment. As a result, when it is determined that there is no abnormality, it is determined that the alarm is issued temporarily, and an instruction is issued to return to the normal monitoring state. In the case of the telephone communication method, an instruction is given to reset the alarm lamp display at the same time. If an abnormality is considered to occur, a staff member is dispatched from the responsible office to the customer to take measures such as pursuing the cause of the alarm.

[0004]

However, in the conventional insulation monitoring system having the above-described configuration, the following problem arises when an attempt is made to take a countermeasure when a report of an alarm is notified to a responsible office. Occurs. The report from the customer is sent to the office in charge by telephone or automatic transmission via the monitoring center, but it contains only an alarm signal indicating that the level of insulation deterioration has exceeded the lowland,
In order for the staff in charge to take appropriate countermeasures, it must be said that the information is insufficient. For this reason, the office in charge contacts the customer by telephone to check the status of the power equipment and its surroundings. At this time, if the customer is absent,
When the customer is in a place remote from the power receiving room, the telephone call must be made again for confirmation, and prompt response may not be possible. In addition, since confirmation by telephone allows the office staff to grasp the situation by the report of the customer, there is a possibility that an incorrect initial decision is made and an appropriate measure cannot be taken. The present invention has been made in order to solve the above-mentioned problem, and provides an insulation monitoring system capable of promptly and surely confirming an initial abnormality in an alarm issuance notified from a customer. With the goal.

[0005]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, an insulation level of an electric circuit of a power consumer is detected, and an alarm is issued when the detected insulation level exceeds a predetermined value. An insulation monitoring system using an insulation monitoring device that emits a signal, comprising: a transceiver capable of using a high-speed digital data communication service of a PHS; and a memory for storing insulation level data supplied from the insulation monitoring device. When an alarm is issued, the alarm and the insulation level data stored in the memory are transmitted from the transceiver to the terminal device of the insulation monitoring and management department via the PHS network.
According to the second aspect of the present invention, in the insulation monitoring system according to the first aspect, a monitoring device is installed in the power equipment of the power consumer in addition to the insulation monitoring device, and data supplied from the monitoring device is converted into insulation level data. And sending it to the terminal device of the insulation monitoring and management department.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 is a schematic configuration diagram showing an example of an embodiment of an insulation monitoring system according to the present invention. As shown in the figure, the present insulation monitoring system is installed in a power receiving room of a power customer, monitors the insulation state of an electric circuit, and issues a warning signal when a leakage current of a specified level or more is detected. A transmission / reception unit 12 capable of using a high-speed digital communication service, a memory 13 for storing leakage current data detected by a detection unit, and an output data from a surveillance camera or another sensor for monitoring power equipment through an interface such as RCS-232C. An insulation detector 1 comprising an input / output circuit 14 for performing data processing so that it can be input to the transmission / reception unit 12 and an antenna 15 for transmitting and receiving radio waves; a notification device 2 for receiving an alarm signal, turning on an alarm lamp and emitting an alarm sound; ,
PHS (Personal Handy-phone System) Network 3
And a PHS terminal 4 that can use a high-speed digital communication service located at a monitoring center or the like of the insulation monitoring system.
And an information processing terminal 5 connected to the PHS receiving terminal 4 for processing data received by the PHS terminal 4.

[0007] The operation of the insulation monitoring system having the above configuration is as follows. When the detecting unit 11 detects the level of the leakage current of the electric power equipment equal to or higher than a specified value, the detector 11 outputs an alarm signal to the notifying device 2 to turn on the alarm lamp of the notifying device 2, and at the same time, the notification The device 2 emits an alarm sound. At the same time, the alarm signal causes the memory 13 to operate to store the leakage current detection data, and causes the transmitting / receiving unit 12 to automatically make a call to the PHS terminal 4 of the monitoring center. When the transmission / reception unit 12 and the PHS terminal 4 are in a communication state via the PHS network 3, the identification number of the insulation detector 1 is transmitted from the transmission / reception unit 12, and a data transmission request signal is transmitted from the terminal 4 confirming this. Sent to According to the request signal, the transmission / reception unit 12 reads the detection data stored in the memory 13 and transmits the data to the PHS terminal 4. The data received by the PHS terminal 4 is processed by the information processing terminal 5, and the person in charge can check the leakage current detection data after the alarm is issued. if,
If a monitoring camera or the like for the power equipment is connected to the input / output circuit, the PHS terminal 4 sends a request signal to the transmission / reception unit 12 to transmit image data, receives the request signal, and displays the monitor screen on the information processing terminal. 4 can be confirmed.

If it is determined by the above means that there is no abnormality at present, a reset signal is transmitted from the PHS terminal 4 to the transmission / reception unit 12, and the insulation detector 1 and the notification unit 2 are transmitted.
Is returned to the normal monitoring status. If necessary, the customer can be contacted for confirmation by a telephone (not shown). If an abnormality is found from the transmitted detection data or the monitor screen, contact the customer and go to the office to take necessary measures. The detection data stored in the memory 13 is left as a history and can be called up and referred to when a next alarm is issued.

As described above, according to the system of the present invention, as soon as an alarm is issued, a monitoring device is installed in the power equipment of the customer based on the leaked current detection data immediately. Then, the initial insulation status can be grasped based on the monitor screen without bothering the customer.

[0010]

As described above, conventionally, the notification of the occurrence of an abnormality in the insulation state and the contact to the person in charge of treatment have been performed by telephone. However, the insulation monitoring system of the present invention has a PHS function. A transceiver is added to the insulation detector, and the high-speed data communication function of the PHS is configured to directly send insulation monitoring data to the office in charge of the PHS terminal. Can be sent to the person in charge of treatment, so that the person in charge of treatment can directly check the data from the site and visually check the image to determine the initial situation. And correct measures can be taken. Therefore, there is a remarkable effect that a more reliable security service can be provided to the consumer. In addition, when the insulation monitoring system of the present invention is adopted for a monitoring device having no communication function, there is no need to lay a new communication line, and there is an effect that introduction is extremely easy.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of an insulation monitoring system according to the present invention.

FIG. 2 is a schematic diagram showing an example of a conventional insulation monitoring system, wherein (a) shows a telephone communication system and (b) shows an automatic notification system.

[Explanation of symbols]

1. Insulation detector, 2. Notifier, 3. PH
S network, 4 PHS terminal, 5 Information processing terminal, 11 Detector, 12 Transmitter / receiver, 1
3. memory, 14 input / output circuits, 15 antennas (according to the present invention) 21 insulation detectors 22 notification devices 23
24 telephones, 25 transmitters, 26 reception processing devices, 30 power receiving rooms, 31 offices, 3
2. Monitoring center

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2G014 AA16 AB02 AB33 AC15 5G064 AA01 AB03 AC08 CB16 DA05 5K067 AA42 BB04 EE06 GG01 HH23 LL01 LL13 5K101 KK13 LL12 SS06

Claims (2)

[Claims] 1. An insulation monitoring system using an insulation monitoring device that detects an insulation level of an electric circuit of an electric power consumer and issues an alarm when the detected insulation level exceeds a predetermined value. A transceiver capable of using a service, and a memory for storing insulation level data supplied from the insulation monitoring device, wherein when the insulation monitoring device issues an alarm, an alarm and the insulation level data stored in the memory are provided. Is transmitted from the transceiver to a terminal device of an insulation monitoring and management department via a PHS network. 2. A monitoring device is installed in a power facility of a power consumer in addition to the insulation monitoring device, and data supplied from the monitoring device is transmitted to a terminal device of an insulation monitoring management section together with insulation level data. The insulation monitoring system according to claim 1, wherein the system is configured.